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The following Lewis diagram represents the valence electron configuration of a main-group element. X• This element is in group According to the octet rule, this element would be expected to form an ion with a charge of [ If X is in period 5, the ion formed has the same electron configuration as the noble gas The symbol for the ion is

The following Lewis diagram represents the valence electron configuration of a main-group element. X• This element is in group According to the octet rule, this element would be expected to form an ion with a charge of [ If X is in period 5, the ion formed has the same electron configuration as the noble gas The symbol for the ion is

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
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The following Lewis diagram represents the valence electron configuration of a main-group element. **X** • (A representation of element X with one valence electron depicted by a single dot) **Questions:** 1. **This element is in group ________ .** - A dropdown selection or blank space to indicate the group number. 2. **According to the octet rule, this element would be expected to form an ion with a charge of ________ .** - A dropdown selection or blank space to indicate the charge of the ion. 3. **If X is in period 5, the ion formed has the same electron configuration as the noble gas ________ .** - A blank space to fill in the symbol of the noble gas. 4. **The symbol for the ion is ________ .** - A blank space to fill in the ion symbol. **Notes:** - This diagram indicates that element X has one valence electron, which is typical of elements in Group 1 of the periodic table. - According to the octet rule, elements in Group 1 typically form ions with a +1 charge to achieve a noble gas electron configuration. **Example Filling:** 1. This element is in group **1** . 2. According to the octet rule, this element would be expected to form an ion with a charge of **+1** . 3. If X is in period 5, the ion formed has the same electron configuration as the noble gas **Krypton (Kr)** . 4. The symbol for the ion is **X⁺** .
Transcribed Image Text:The following Lewis diagram represents the valence electron configuration of a main-group element. **X** • (A representation of element X with one valence electron depicted by a single dot) **Questions:** 1. **This element is in group ________ .** - A dropdown selection or blank space to indicate the group number. 2. **According to the octet rule, this element would be expected to form an ion with a charge of ________ .** - A dropdown selection or blank space to indicate the charge of the ion. 3. **If X is in period 5, the ion formed has the same electron configuration as the noble gas ________ .** - A blank space to fill in the symbol of the noble gas. 4. **The symbol for the ion is ________ .** - A blank space to fill in the ion symbol. **Notes:** - This diagram indicates that element X has one valence electron, which is typical of elements in Group 1 of the periodic table. - According to the octet rule, elements in Group 1 typically form ions with a +1 charge to achieve a noble gas electron configuration. **Example Filling:** 1. This element is in group **1** . 2. According to the octet rule, this element would be expected to form an ion with a charge of **+1** . 3. If X is in period 5, the ion formed has the same electron configuration as the noble gas **Krypton (Kr)** . 4. The symbol for the ion is **X⁺** .
### Understanding Valence Electron Configurations: A Visual Analysis The following Lewis diagram represents the valence electron configuration of a main-group element. **Lewis Diagram:** ``` :X: . | . . : . ``` In the Lewis diagram above: - The element X is surrounded by a total of seven valence electrons. **Questions to Consider:** 1. **Group Identification:** - **Question:** This element is in group ______. - **Answer:** Elements with seven valence electrons are typically in Group 17 (the halogens) of the periodic table. 2. **Ion Charge Prediction:** - **Question:** According to the octet rule, this element would be expected to form an ion with a charge of _____. - **Answer:** To achieve a full octet, this element would gain one electron, resulting in a charge of -1. 3. **Noble Gas Configuration:** - **Question:** If X is in period 4, the ion formed has the same electron configuration as the noble gas _____. - **Answer:** For elements in period 4, gaining one electron would give it the same electron configuration as krypton (Kr). 4. **Symbol for the Ion:** - **Question:** The symbol for the ion is ______. - **Answer:** The symbol for a halogen ion with a -1 charge in period 4 is \( \text{Br}^- \) (bromide ion). This exercise helps in understanding how to infer group number, expected charge, and corresponding noble gas configuration based on the Lewis diagram for valence electrons.
Transcribed Image Text:### Understanding Valence Electron Configurations: A Visual Analysis The following Lewis diagram represents the valence electron configuration of a main-group element. **Lewis Diagram:** ``` :X: . | . . : . ``` In the Lewis diagram above: - The element X is surrounded by a total of seven valence electrons. **Questions to Consider:** 1. **Group Identification:** - **Question:** This element is in group ______. - **Answer:** Elements with seven valence electrons are typically in Group 17 (the halogens) of the periodic table. 2. **Ion Charge Prediction:** - **Question:** According to the octet rule, this element would be expected to form an ion with a charge of _____. - **Answer:** To achieve a full octet, this element would gain one electron, resulting in a charge of -1. 3. **Noble Gas Configuration:** - **Question:** If X is in period 4, the ion formed has the same electron configuration as the noble gas _____. - **Answer:** For elements in period 4, gaining one electron would give it the same electron configuration as krypton (Kr). 4. **Symbol for the Ion:** - **Question:** The symbol for the ion is ______. - **Answer:** The symbol for a halogen ion with a -1 charge in period 4 is \( \text{Br}^- \) (bromide ion). This exercise helps in understanding how to infer group number, expected charge, and corresponding noble gas configuration based on the Lewis diagram for valence electrons.
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